How To Check If Car Battery Is Good. Troubleshoot a car battery without any tools. If your multimeter is not autoranging set it to 20V DC.
At about 80 degrees a fully charged battery will be around 125-126 volts. Ad Quick Lane Saves You Time Money. Proactively testing it or making sure your mechanic does twice a year will help reduce your chances of failure.
The temperature outside affects the voltage of the battery.
This easy car battery test can help you decide if you need to replace a car battery. Ad Stay Charged In The Harsh Winter Weather. When you do this test on your car you want to see about 124 to 126 volts. Its important to test your battery and electrical system regularly not just when its starting to show signs of weakness.
